William a



(iwMaeLy W.'A. SWEET. WIRE NAIL.

No. 376,791. w y Patented Jari. 24, 1838;

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UNITED 'SfrAf-rl'ls PATENT OFFICE; f ,Y-

WILLIAM A. sWEEn'or-sYnAcUsn, NEW'YORK.

WIRE NAIL. d f V SPECIFICATION orming'partcf Letters Patent No. 376,791,dated January 24, 1888.

Application tiled September 27, 1886. Serialy No. 214,673. (No model.)

To all whom, it may concern:

'railroad-spike. Fig. 5 are like views of a threesided blunt-edgedrailroad-spike. Figs. 6 and 7 are like viewsfof an oval-bodied'railroadspike. Fig. 8 are details of a three sided nail or spike withchiselpoint. Fig. 9 are details of a three-sidedcurved-line orwedge-pointed nail or spike. Fig. 10 are details of a bluntedgedthree-sided curved -line or wedgepointed nail or spike. f

The object of my invention is to produce a new and improved style orclass of nails orv spikes; and it relates, generally, to that classi:fication commonly distinguished as Wire nails.77 The peculiarly strongfeature of it is, that I produce a nail from wire which, from itspeculiar form, possesses the one particular attribute and property notpossessed by any other wire nail, to my knowledge, which is mostdesirable and essential in a nail, in that my nail, althoughstraight-sided, will draw inthe same manner and substantially to thesame extent as the common wire nail.

A is 'my nail or spike, constructed with a body, 1, head 2, and point 3.rIhe body of this in .cross-section.

nail or spike in its general form is triangular This triangularity maybe varied as to the Width of the three main facesthat is to say, theymay all be of equal width, or two may be equal and the third one eitherwider or narrower than the othersor all three -maybe of unequal width;also, these faces may meet each other witha sharp edge; or, as

shown in Fig. 2, they may meet abruptly,form

with teeth, either sharp or blunt, standing at any desired angle o'fpresentation, andl these`l or blunt, maybe plain and smoothdorcorru- ,n'gated-With rough or smooth indentations, or

corrugations or teeth may extend for any desired distance. The heads ofthe nails are also j* of general triangular form and outline,corresponding generally to the triangularity of the 1 The heads of therailroad-spikes illustrated are usually made of the ordinary form, with,the projecting lip to lap onto the flange of the rail. The points are ingeneral construction Y adapted to present upon one, two, lor three'sides (or more) a triangular, or vsubstantially p triangular, face orfaces to venter 'the wood,

lying at any desiredV angle to the body face or faces; also, thesetriangular point-facesmay be straightsided, or may have'one straight andtwo of them curved, or all three may bey curved; also, the general lineor direction of v any or all of these point-faces may be either straightor curved, as it extends back from the point or apex of the point to thebody. When the lines of the point-faces are icurved all in the samecurve from the apex of thepoint back to the body, the-meeting lines ofthese faces, forming the edges of the point, will also be'curved, andwhen so constructed I'create what I term a curved-line pyramidalpoint,77 l to distinguish it from a point in which the edges straight.Fig. 10 illustrates this curvedlin'e pyramidal point; also, the pointsmay be pyramidal, as shown in Fig. 2, or wedging, as shown in Figs. 6,9, and 10, or chisel-shaped, as shown in Fig. 8. Y

In Figs. 8, 6, and 7 I show a nail or spike constructed with a body ovalor elliptical iny cross-section, to which I apply my principle oftriangularity in the faces of the point.k Y

What I claim as my invention, and desire to securefby Letters Patent, is

A nail' constructed with a three-cornered as shownand described.

ypyrainidal faces are plane and their meeting In witness whereof I havehereunto-set my hand this 17th day of September, 1886.` 7

In presence of Y O. W. SMITH,

SAML. D. GIBSON.

WILLIAM A. sWnF'rfy

